Commagene — A settlement in Syria
Commagene was the most northerly district of Syria, bordering upon Cilicia. It became a separate kingdom in the second century BC.

In 17 when Antiochus III of Commagene died, Emperor Tiberius annexed Commagene to the province of Syria. According to Josephus, this move was supported by the local nobility but opposed by the mass of the common people, who preferred to remain under their kings as before; Tacitus, on the other hand, states that "most preferred Roman, but others royal rule".

Modern location:
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An AE Dupondius struck 19-21 AD in Commagene
Obverse: TI CAESAR DIVI AVGVSTI F AVGVSTVS, Head of Tiberius facing right, wearing laurel wreath

Reverse: PONT MAXIM COS III IMP VII TR POT XXI, Upright caduceus between two crossed cornucopias framing two crossed branches

Diameter: 29 mm
Die Orientation: 12 H
Weight: 14.76 g
In 17 AD when Antiochus III of Commagene died, Tiberius annexed Commagene to the province of Syria. RIC is confident in the attribution to this mint, RPC is hesitant with Antioch being another possibility based on find evidence. RIC dates to 19-21 AD, whereas RPC goes with 19-20 AD.
RIC I (Second Edition) Tiberius 89, RPC I 3868
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An AE Dupondius struck 19-21 AD in Commagene
Obverse: TI·CAESAR·DIVI·AVGVSTI·F·AVGVSTVS, Head of Tiberius facing right, wearing laurel wreath

Reverse: Blundered Inscription, Caduceus between crossed cornucopias

Diameter: 30 mm
Die Orientation: 12 H
Weight: 9.6 g
Because of the blundered and weakly struck at the point of interest inscription, I'm uncertain whether the inscription ends TR POT XXI or II

In 17 AD when Antiochus III of Commagene died, Tiberius annexed Commagene to the province of Syria. RIC is confident in the attribution to this mint, RPC is hesitant with Antioch being another possibility based on find evidence. RIC dates to 19-21 AD, whereas RPC goes with 19-20 AD.
RIC I (2nd Ed.) Tiberius 89-90; RPC I 3868-9